CN101345683A - Protocol packet transmission control method of Ethernet automatic protection switch system - Google Patents
Protocol packet transmission control method of Ethernet automatic protection switch system Download PDFInfo
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Abstract
The invention discloses a protocol message transmission control method in an ether rig net automatic protection switch system. In the invention, all EAPS fields in the EAPS system share a control VLAN, for transmitting the protocol message, arrange corresponding filed ID and protected VLAN for each EAPS field, which is used for transmitting service data, meanwhile arrange corresponding ring ID for each EAPS ring. The protocol message transmitted between nodes is carried with the field ID and ring ID information, thereby avoiding that one EAPS field must be bonded with a special control VLAN, effectively saving VLAN resource.
Description
Technical field
The present invention relates to the automatic resist technology of ethernet ring network, be specifically related to the protocol packet transmission control method in the ethernet ring network automatic protected switch system.
Background technology
Along with Ethernet is used scale in metropolitan area network and local area network (LAN) continuous expansion, improve stability of network and reliability and become the focus that everybody more and more pays close attention to.Traditional Ethernet recovery capability mainly is to pass through OSPE; BGP (Border Gateway Protocol; Border Gateway Protocol) and STP (Spanning TreeProtocol; Spanning-Tree Protocol) realizes; its convergence rate often can only in minute and second come; this obviously can not satisfy the requirement of real time business such as existing network transferring voice and data; so EAPS (Ethernet Automatic Protection Switching; the Ethernet automatic protection switching) technology has just been arisen at the historic moment; the EAPS technology can make network link recovery time less than 1 second, even often can reach 50ms.
See also Fig. 1, this figure is the structural representation of EAPS ring, as seen from the figure, the EAPS ring is by a host node and a plurality of loop network structure of forming from node, transmission has business datum and a control messages in EAPS ring, under initial normal condition, for business datum, the spare physical port P2 of host node obstruction self side, guarantee when service data transmission, the EAPS ring is a chain, rather than a ring-type, thereby avoids unknown unicast and the broadcast (sites) in turn of broadcasting under loop network to take place; For control messages, host node need not to block the spare physical port P2 of self side, that is to say when transmitting control message, the EAPS ring is a ring-type, thereby makes host node can receive from opposite side physical port P2 after the transmission of EAPS ring from the control messages that a side physical port P1 sends.
The EAPS technology can not only realize the control to the monocycle single domain at present, and can realize the control to many rings multiple domain.The method of a kind of EAPS of assurance system operate as normal is disclosed in the application documents of Chinese patent CN200510112953.8, comprise following content: in the EAPS of monocycle single domain system, after the operating state of host node changes, secondary node in time notifies each node on the ring to refresh mac address table according to current actual node connection situation, makes that each node in the subsequent transmission process is carried out transmission according to correct mac address table.Interworking Ethernet ring network and automatic protecting method thereof are disclosed in the application documents of Chinese patent CN200610111382.0; and looped network node equipment; comprise following content: in the EAPS system of many ring single domains; main ring is as the virtual host node of subring; main ring passes through first fringe node and second fringe node and subring and intersects; the connectivity port is respectively first of virtual host node; two ports; port is set for blocking respectively; forward mode; when detecting subring generation link failure; just first port with virtual host node is made as forward mode; and initiate to refresh to transmit notice; when the subring looped network recovers, then first port is made as blocking model.
Above-mentioned two kinds of schemes have realized the monocycle and the automatic protection switching of the EAPS system of cross ring topology mutually, but do not relate to the protocol packet transmission control method in the EAPS system.
U.S. Pat 6766482 application documents disclose the automatic resist technology of a kind of ethernet ring network; comprise following content: the EAPS territory is set; and be that each territory defines a different control VLAN and a plurality of shielded VLAN; protocol massages is propagated in control VLAN; user's business is propagated in protection VLAN; by the central port state in the protection VLAN is switched, realize protection to business.Defined a control VLAN for each EAPS territory in the such scheme, protocol massages is propagated by control VLAN, yet owing to may have a plurality of EAPS territory simultaneously in an EAPS system, therefore each EAPS territory takies a control VLAN and can cause this VLAN there is no other use for it except the propagation protocol message, thereby has caused the waste of VLAN resource.
Summary of the invention
The invention provides the protocol packet transmission control method in a kind of ethernet ring network automatic protection switching ring, all must take the problem of a control VLAN in order to transmission protocol message in order to each the EAPS territory that solves in the existing EAPS system.
Protocol packet transmission control method in a kind of ethernet ring network automatic protected switch system; a control VLAN is shared in all EAPS territories in the described EAPS system; be used for the transmission of protocol massages, carry territory ID and ring ID in the protocol massages, the concrete steps of transmission protocol message are between node:
A, node receive protocol massages by control VLAN, determine from the role in this territory should be encircled, if host node according to territory ID in the protocol massages and ring ID, then carry out next step, if from node, then determine the outbound port of message according to described territory ID and ring ID, protocol massages is forwarded;
B, node are determined the type of protocol massages according to message content, if this message is the detection protocol message, determine that then loop circuit state is normal, it is forwarding state that master port is set, setting is a blocked state from port, if this message is the alarm protocol massages, then send the address flush message by control VLAN, master and slave port is set to forwarding state.
Preferable, each the EAPS territory in the described EAPS system has one group of shielded VLAN, is used for the transmission of business datum.
Preferable, described node is during from node, if the outbound port of protocol massages does not exist, does not then transmit the protocol massages that receives.
Preferable, described node is a host node, when the protocol massages of transmission is the detection protocol message, comprises also before the steps A that described node sends the step of detection protocol message by control VLAN.
Preferable, if node is not received the detection protocol message through default duration in control VLAN, determine that then loop circuit state is unusual, master and slave port all is set to forwarding state.
Preferable, described node is a host node, and the protocol massages of transmission is alarm during protocol massages, described node by control VLAN to same area with sending the address flush message from node in the ring, refresh respectively from the EAPS port address table of node with this, make respectively and relearn MAC Address from node.
A control VLAN is shared in all EAPS territories among the present invention in the EAPS system; be used for the transmission of protocol massages; for each EAPS territory is provided with corresponding territory ID and shielded VLAN; shielded VLAN is used for service data transmission; for each EAPS ring corresponding ring ID is set simultaneously; carry territory ID and ring id information in the protocol massages that transmits between node; thereby avoided a way that the control VLAN of a special use must be bound in the EAPS territory; saved the VLAN resource, effectively utilized limited VLAN resource and guaranteed that each EAPS territory can correctly handle the corresponding protocol message.
Description of drawings
Fig. 1 is the structural representation of EAPS ring;
Fig. 2 is the flow chart of protocol packet transmission control method in the EAPS of the present invention system;
Fig. 3 is the flow chart of node transmission detection protocol message among the present invention;
Fig. 4 is the flow chart of node transmitting warning protocol massages among the present invention;
Fig. 5 is the transmission schematic diagram of the detection protocol message under the monocycle single domain of the present invention;
Fig. 6 is the transmission schematic diagram of the chain circuit alarming protocol massages under the monocycle single domain of the present invention;
Fig. 7 is the transmission schematic diagram of the protocol massages under the monocycle multiple domain of the present invention;
Fig. 8 encircles the transmission schematic diagram of the protocol massages under the multiple domain more for the present invention.
Embodiment
A control VLAN is shared in all EAPS territories among the present invention in the EAPS system; be used for the transmission of protocol massages; for each EAPS territory is provided with corresponding territory ID and shielded VLAN; shielded VLAN is used for service data transmission; for each EAPS ring corresponding ring ID is set simultaneously; carry territory ID and ring id information in the protocol massages that transmits between node, thereby avoided a way that the control VLAN of a special use must be bound in the EAPS territory, effectively saved the VLAN resource.
Describe below in conjunction with the specific implementation process of each accompanying drawing protocol packet transmission control method in the EAPS of the present invention system.
See also Fig. 2, this figure is the flow chart of protocol packet transmission control method in the EAPS of the present invention system, and it mainly comprises step:
Step 11, recipient's node receive protocol massages in control VLAN, territory ID that under self, carries in the vlan query protocol VLAN message territory and the ring and ring ID, determine from the role in this territory should be encircled, if recipient's node should be a host node in the ring in this territory, then execution in step 13, this encircles to from node if recipient's node is in this territory, and then execution in step 12.
See also Fig. 3, this figure is the flow chart of node transmission detection protocol message among the present invention, and its main implementation procedure is as follows:
The master port of step 20, host node outwards sends the detection protocol message, initiates loop circuit state and detects.
Receive the detection protocol message successively from node on step 21, the EAPS ring, according in the detection protocol message that receives with territory ID and outbound port that judge to transmit of ring ID, make this detection protocol message successively by on the EAPS ring all behind node, be sent to host node from port.
In this step, if judge that from node the outbound port of detection protocol message does not exist, and does not then transmit the detection protocol message that receives.
See also Fig. 4, this figure is the flow chart of node transmitting warning protocol massages among the present invention, and its main implementation procedure is as follows:
When step 30, link occurs fault, two of the fault nidus upwards send link simultaneously from node and disconnect the alarm protocol massages.
On step 31, the loop receive this alarm protocol massages from node after, according in the protocol massages with territory ID and outbound port that judge to transmit of ring ID, the link that receives is disconnected the alarm protocol massages upwards transmits.
In this step, if judge that from node the outbound port of alarm protocol massages does not exist, and does not then transmit the alarm protocol massages that receives.
The master and slave port of step 32, host node is all received and is transmitted the chain circuit alarming protocol massages of coming.
Step 33, host node are gone up each transmission node from master and slave port to ring and are sent the address flush message, so that delete the address table of the EAPS port on each node, make it relearn MAC Address, and master and slave port all is set to forwarding state, and flow process finishes.
See also Fig. 5, this Figure illustrates the transmission and the State Control situation of detection protocol message in the network topology of a monocycle single domain.Wherein, S1 is host node (Master), and S2～S4 is from node.The port P1 of S1 is a master port, and P2 is from port.The master port P1 of host node S1 sends HEALTH detection protocol message by control VLAN, after S2 receives this detection protocol message, according in the detection messages with territory ID find the another one EAPS port in this territory, from this port the detection protocol message of receiving is forwarded then, pass through S3 successively, the S4 node, get back at last host node from port P2, host node judges that this frame is exactly the own detection protocol message that is sent from master port P1, so just judge that loop circuit state is normal, the master port P1 of host node S 1 is changed to forwarding state, and P2 is changed to blocked state from port.
See also Fig. 6, this Figure illustrates transmission and the State Control situation of in the network topology of monocycle single domain, when certain bar link occurs fault, alarming protocol massages.Wherein, S1 is host node (Master), and S2～S4 is from node.The port P1 of S1 is a master port, and P2 is from port.When the link between node S3, S4 opens circuit, S3, S4 node upwards send the alarm protocol massages that opens circuit simultaneously in control VLAN, after receiving this alarm protocol massages from node S2, according in the message with territory ID find the another one EAPS port in this territory, the alarm protocol massages that to receive from this port forwards then, and the master and slave port of final host node S1 all can be received this alarm protocol massages.Host node judges that loop breaks down after receiving this alarm protocol massages, can will be changed to forwarding state from port P2, can send the address flush message from master and slave port simultaneously, be forwarded to each node under this territory by control VLAN, refresh the address table of the EAPS port of each node, make it relearn MAC Address.
See also Fig. 7, this Figure illustrates protocol massages transmission and State Control situation in the network topology of a monocycle multiple domain.Wherein, S1～S4 forms single loop, has two EAPS territories simultaneously, and territory A and territory B, territory A and territory B share a control VLAN and carry out the transmission of protocol massages.The territory ID of territory A is 1, is protecting one group of VLANS, and its host node (Master) is S2, and S1, S3, S4 are from node; The territory ID of territory B is 2, is protecting another group VLANS, and its host node (Master) is S4, and S1, S2, S3 are from node.In the A of territory, host node S2 can send the detection protocol message to from node from its master port among control VLAN, find the another port of EAPS that message is transmitted from node according to the territory id information the detection messages, finally get back to host node S2, host node S2 judges that this message is that oneself sends, and territory ID is identical, so judge that loop circuit state is normal, the master port of host node S2 will be changed to forwarding state, be changed to blocked state from port.In the B of territory, host node S4 also can send the detection protocol message to from node from its master port in identical EAPS control VLAN, similarly, transmit through the node of associating, finally get back to territory B host node S4 from port, S4 judges that this message is that oneself sends, and territory ID is identical, so judge that loop circuit state is normal, the master port of S4 will be changed to forwarding state, be changed to blocked state from port.When link-state change takes place when, interdependent node can be notified the host node in each territory simultaneously to the host node transmission chain circuit alarming protocol massages in each territory in territory A and territory B, the host node of territory A and territory B also can send the address flush message and upgrade Link State in the territory separately.Territory A and territory B carry out mutual protocol massages in this process all finishes by same control VLAN.
See also Fig. 8, this Figure illustrates more than one the protocol massages transmission in the network topology of ring multiple domain and the situation of State Control.Have ring 1 and 2 two loops of ring among the figure, two rings intersect by two nodes of S1, S3, respectively corresponding domain A and territory B.The territory ID of territory A is 1, is protecting one group of VLANS, and its host node (Master) is S2, and S1, S3 are from node; The territory ID of territory B is 2, is protecting another group VLANS, and its host node (Master) is S4, and S2, S3 are from node.In the A of territory, host node S2 sends detection messages to from node S3 from its master port P1 among control VLAN, S3 judges the outbound port of transmitting according to territory ID in the protocol massages and ring ID after receiving detection messages, message is forwarded from the outlet that encircles on 1, through the node S1 that associates get back to host node from port P2, S2 judges that this message is for own transmission, and territory ID is identical, so judge that loop circuit state is normal, the master port of host node S2 will be changed to forwarding state, be changed to blocked state from port.In the B of territory, host node S4 also can send detection messages to from node S3 from its master port P1 in identical EAPS control VLAN, S3 is same to judge port according to the detection messages of receiving, message is forwarded from the outlet that encircles on 2, through the node S1 that associates get back to host node S4 from port P2, S4 judges that this message is for own transmission, and territory ID is identical, so judge that loop circuit state is normal, the master port of host node S4 will be changed to forwarding state, be changed to blocked state from port.When link-state change takes place when, the node that breaks down can send the chain circuit alarming protocol massages to the host node of corresponding field according to the situation that disconnects territory, port place, and the host node in this territory can send the address flush message and upgrade Link State in this territory after receiving the alarm protocol massages.Territory A and territory B carry out mutual protocol massages and all finish by same control VLAN in this process.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1, the protocol packet transmission control method in a kind of ethernet ring network automatic protected switch system; it is characterized in that; a control VLAN is shared in all EAPS territories in the described EAPS system; be used for the transmission of protocol massages; carry territory ID and ring ID in the protocol massages, the concrete steps of transmission protocol message are between node:
A, node receive protocol massages by control VLAN, determine from the role in this territory should be encircled, if host node according to territory ID in the protocol massages and ring ID, then carry out next step, if from node, then determine the outbound port of message according to described territory ID and ring ID, protocol massages is forwarded;
B, node are determined the type of protocol massages according to message content, if this message is the detection protocol message, determine that then loop circuit state is normal, it is forwarding state that master port is set, setting is a blocked state from port, if this message is the alarm protocol massages, then send the address flush message by control VLAN, master and slave port is set to forwarding state.
2, the method for claim 1 is characterized in that, each the EAPS territory in the described EAPS system has one group of shielded VLAN, is used for the transmission of business datum.
3, the method for claim 1 is characterized in that, described node is during from node, if the outbound port of protocol massages does not exist, does not then transmit the protocol massages that receives.
4, the method for claim 1 is characterized in that, described node is a host node, when the protocol massages of transmission is the detection protocol message, comprises also before the steps A that described node sends the step of detection protocol message by control VLAN.
5, method as claimed in claim 4 is characterized in that, if node is not received the detection protocol message through default duration in control VLAN, determines that then loop circuit state is unusual, and master and slave port all is set to forwarding state.
6, the method for claim 1, it is characterized in that, described node is a host node, when the protocol massages of transmission is the alarm protocol massages, described node by control VLAN to same area with sending the address flush message from node in the ring, refresh respectively from the EAPS port address table of node with this, make respectively and relearn MAC Address from node.
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| CN101888322B (en) * | 2010-07-19 | 2013-04-10 | 南京邮电大学 | Method for preventing repeated refresh of sub-ring outer domain address |
| CN101888322A (en) * | 2010-07-19 | 2010-11-17 | 南京邮电大学 | Method for preventing repeated refresh of sub-ring outer domain address |
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Application publication date: 20090114 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2017440020015 Denomination of invention: Protocol packet transmission control method of Ethernet automatic protection switch system Granted publication date: 20121128 License type: Common License Record date: 20170310 |